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PrimeGrid: News Fermat Number Divisor

 
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PostPosted: Sat Jun 12, 2010 2:16 pm    Post subject: PrimeGrid: News Fermat Number Divisor Reply with quote


Congratulations to Senji Yamashita (<a href="http://www.primegrid.com/show_user.php?userid=3993" rel="nofollow">s-yama</a>) of Japan, the discoverer of PrimeGrid's second Fermat Number divisor in the Proth Prime Search project: 519*2^567235+1 Divides Fermat F(567233). It is only the 2nd found Fermat Number divisor of 2009 and 272nd overall. It is the 7th largest Fermat Number divisor in Chris Caldwell's The Largest Known Primes Database. Incidentally, it is a new record for "weighted" Fermat Number divisors. For more information, please see this <a href="http://www.primegrid.com/forum_thread.php?id=1161&nowrap=true#14214" rel="nofollow">forum post</a>.

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Source: PrimeGrid: News

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